00285nam a2200109Ia 4500008004100000040001200041082001400053100002100067245004400088260003000132300001300162200103s9999||||xx |||||||||||||| ||und||  aIMU-MPC  aColumn-14  aMerrifield, F.G. 0aShip Magnetism and the magnetic compass  bsterling Book Housec1995  avii, 189